Hello, im fairly new to reefkeeping but for the last 4 months i have had a 55gal beginer reef tank running and so far everything is fine. I build my own MM refug out of an extra 10 gallon tank and a cheap pump. I admit that i am performing the biggest no-no in reefkeeping, im trying to get by cheap, but I'm also trying to prove it can be done. I have about 3 big pieces of live rock figi/tonga and some brown button polyps, 1 molly that gave birth to about 10 babies that are doing fine and 1 yelow striped moroon clownfish. This is my first salt water tank but i also have a 120 gal fresh water tank and about 3+ yrs of experience with that. Anyways, i have culerpa growing like mad. my nitrite/nitrate levels are good and my amonia is near 0. All other levels are good and the only thing i have had trouble with is my polyps were not opening up all the way due to low light levels, I tried to get by with 2 15 W cheapo flourescent bulbs and it just wasn't enough, i bought a 130 W powercompact smartlight and they are doing much better now. My MM refuge is doing great all kinds of creeppy crawlies in there and all i have is another el-cheapo 12" floresent bulb over the tank that never shuts off. The culerpa is literally outgrowing the tank. I built it by putting 10 lbs of MM in the bottom and a plastic butter container in each end of the tank. One container has about 50 bio-balls in it and some filter media over top where my over flow feeds the water and holes in the bottom and the other has holes drilled near the top and a 300 gph pump in it. My fish are healthy and happy and show no signs of any problems. I got algae, tons of it, brown and green and i just put 2 turbo snails in the tank to start cleaning things up, the algae was getting so bad that it was getting hard to see the fish! anyways the snails have been going to town for the last couple of weeks and things are looking better. I never acclimated anything except the fish and never had anything die yet. I use to work at a pet store part time and my ediquite some times is not as strict as some people's. I have no skimmer and i don't add anything to the tank. I'm sure that once i get into hard corals i will need to but for now everything is healthy. I'm taking this slow and sticking to the "golden rules" of fishkeeping. Sorry fo rthe long post but i want you to see where i am coming from. At our local pet store they had calerpa in the reep tank, not the sump and it was under 250w MH all day but was always dieing, I think it was because it was too deep and the shut the lights off on it. I think it needs to grow in shallow, warm, constant light conditions and you got to keep the water flowing over it for it to work. i only have a 300 gph pump but the refuge only has about 5 gal of water in it so it is replacing the water in there every min. In the begining of my fishkeeping i learned that i was trying to keep the tank too clean and my fish died, too many water changes and no algae, I think algae is kind of a golden rule for aquriums, in fact, when i start a new tank now, i won't put fish in untill algae starts to grow, to me its natures way of saying that the water is ready.I also won't do a water change until there is a reason. Water changes are good and bad in my eyes. Yes they help lower nitrate levels but they also remove alot of things that the tank needs. I keep my water temp at about 78-80 deg and my salinity at 1.025 and I'm very happy with the miracle mud product. The macroalgae is doing great and i have not done a single water change in 4 months. Just some info that may help you.